Characteristic of Amphibians. Amphibians posses certain characteristic those are different from other species. These characteristic helps to adopt them in all the climate conditions and environment. Amphibians are cold blooded animals that derive heat from outside. The body temperature of the amphibians depends on the outside surroundings. Hence the amphibians are very active in warm environments and become lethargic when exposed to cold temperatures. As an offspring the amphibians begin their life cycle under the water breathing through gills. As they reach the adulthood they move to land and breathe with the help of either skin or lungs. Worms and insects act as the prey to the amphibian. Each species of the amphibians have their own feeding habit.
Civil engineering which involves the design and construction of buildings, roads, bridges, and water infrastructure. Mechanical engineering which involves the design of power, energy, and weapons systems, aircraft and transportation products, and other equipment.
Civil engineering is a professional engineering discipline that deals with the design, construction, and maintenance of the physical and naturally built environment, including works like roads, bridges, canals, dams, and buildings. Civil engineering is traditionally broken into a number of sub-disciplines. It is the second-oldest engineering discipline after military engineering, and it is defined to distinguish non-military engineering from military engineering.